betadistribution.h

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#ifndef BETADISTRIBUTION_H

#define BETADISTRIBUTION_H

#include "probabilitydistribution.h"

class BetaDistribution : public ProbabilityDistribution
{
public:
        BetaDistribution(double a, double b, double minVal, double maxVal, GslRandomNumberGenerator *pRng) : ProbabilityDistribution(pRng)      { m_a = a; m_b = b; m_minVal = minVal; m_scale = (maxVal-minVal); }

        double pickNumber() const;
        double getA() const                                                                             { return m_a; }
        double getB() const                                                                             { return m_b; }
        double getMin() const                                                                           { return m_minVal; }
        double getScale() const                                                                         { return m_scale; }
private:
        double m_a, m_b, m_minVal, m_scale;
};

inline double BetaDistribution::pickNumber() const
{ 
        double x = getRandomNumberGenerator()->pickBetaNumber(m_a, m_b); 
        return x*m_scale + m_minVal;
}

#endif // BETADISTRIBUTION_H